CN114259749B - Online desalination device of fractionating tower top circulation system - Google Patents
Online desalination device of fractionating tower top circulation system Download PDFInfo
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- CN114259749B CN114259749B CN202210184122.5A CN202210184122A CN114259749B CN 114259749 B CN114259749 B CN 114259749B CN 202210184122 A CN202210184122 A CN 202210184122A CN 114259749 B CN114259749 B CN 114259749B
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Abstract
The invention discloses an online desalting device of a fractionating tower top circulation system, belonging to the technical field of petrochemical industry, comprising a fractionating tower, wherein a top circulation oil collecting mechanism is arranged on the fractionating tower, the top circulation oil collecting mechanism is connected with an oil-salt separating device, the oil-salt separating device comprises a separating tank, a main shaft penetrates through the center of the top of the separating tank, an adjusting mechanism is arranged at the top of the main shaft, a stirring mechanism is arranged at the bottom of the main shaft, a medicament port and a driving mechanism are also arranged at the top of the separating tank, a liquid outlet is arranged at the bottom of the separating tank, the liquid outlet is connected with a downstream radial extractor, the downstream radial extractor is connected with an oil-water separator, the oil-water separator is communicated with the top circulation oil collecting mechanism, the oil-water mixed liquid flowing out of the fractionating tower is subjected to oil-water separation through the oil-salt separation device, and the separated oil and water sequentially flow into the downstream radial extractor and the oil-water separator, so that the online desalting efficiency of the device can be effectively improved.
Description
Technical Field
The invention belongs to the technical field of petrochemical industry, and particularly relates to an online desalting device of a fractionating tower top circulation system.
Background
The top circulating oil system of the fractionating tower is the most easily corroded and salted part of the fractionating tower, mainly because chloride and ammonia nitrogen compounds in the catalytic raw materials form Cl ⁻ and NH in the catalytic reaction process3After the water in the catalytic raw material enters the fractionating tower along with the oil gas, the water is partially condensed in the ascending process of the fractionating tower due to Cl ⁻ and NH existing in the condensed water3Very easy shapeTo NH4Aqueous Cl solution and NH4The boiling point of the Cl aqueous solution is higher than the liquid phase temperature of water and the tower tray at NH4Concentrated ammonium salt is gradually separated out and attached to a tower tray and a tower wall in the process that the Cl aqueous solution flows downwards, and gradually blocks the tower tray and a side draw-out port, so that the unqualified product quality is easily caused, even the feeding is cut off, and huge economic loss is caused.
Chinese patent publication No. CN111607431A discloses an online desalting device and method for a fractionating tower top circulation system, the device comprises a top circulation loop, a desalting circulation loop and a water injection desalting branch, ammonium salts in the original oil, water and salt mixed solution are dissolved by a turbulent oil-water mixer through water injection, sewage containing ammonium salts is removed by extracting oil phase through a liquid-liquid extraction phase separator, and the oil phase in the mixed solution is refluxed to a fractionating tower for purification.
However, the on-line desalting device and the method have some problems that after the mixed liquid enters the turbulent oil-water mixer, the oil-water mixture still flows into the liquid-liquid extraction phase separator from the liquid outlet of the turbulent oil-water mixer, the oil and the water are not separated, so that when the oil-water mixed liquid with too high salt content enters the liquid-liquid extraction phase separator, the desalting effect is remarkably reduced, the salt deposition phenomenon at the top of the tower can occur again in a short time after the water washing, and the on-line desalting effect of the device is poor.
Therefore, it is highly desirable to invent an online desalting device of a fractionating tower top circulation system so as to solve the above problems.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an online desalting device for a fractionating tower top circulation system, which can effectively solve the problem in the prior art that when the salt content in raw materials is too high, the online desalting effect is poor.
In order to solve the problems, the invention adopts the following technical scheme;
the utility model provides an online demineralizer of fractionating tower top circulation system, includes the fractionating tower, be equipped with top circulation collection oil mechanism on the fractionating tower, top circulation collection oil mechanism is connected with oil salt separator, oil salt separator includes the knockout drum, the top center of knockout drum runs through and is equipped with the main shaft, the top of main shaft is equipped with guiding mechanism, the bottom of main shaft is equipped with rabbling mechanism, rabbling mechanism establishes inside the knockout drum, the top of knockout drum still is equipped with medicament mouth and actuating mechanism, the alkaline wash jar is connected at the top of medicament mouth, actuating mechanism's output and main shaft rotate to be connected, the bottom of knockout drum is equipped with the liquid outlet, the following current radial direction extractor is connected to the liquid outlet, following current radial direction extractor is connected with oil water separator, oil water separator with top circulation collection oil mechanism is linked together.
Preferably, actuating mechanism includes the motor, the output of motor is fixed with the driving gear, the surface cover of main shaft is equipped with the axle sleeve, the periphery of axle sleeve is fixed with driven gear, the driving gear is connected with driven gear meshing, the inside fixture block that is equipped with of axle sleeve, the fixture block with establish the spout joint on main shaft surface, the bottom of axle sleeve and the top of knockout drum are connected through the bearing rotation of establishing at the knockout drum top.
Preferably, the main shaft cavity sets up, guiding mechanism includes the second cavity, be equipped with step motor and air pump in the second cavity, step motor's output is fixed with the adjusting lever, sliding connection has the connecting rod respectively, and two at the both ends of adjusting lever the connecting rod all is established in the main shaft, the output and the main shaft intercommunication of air pump.
Preferably, rabbling mechanism includes first cavity, the left and right sides of first cavity all is fixed with the connecting pile, there is the puddler through pivot swing joint on the connecting pile, puddler one end run through first cavity and with the bottom swing joint of connecting rod, the other end of puddler is fixed with the bracing piece, the bracing piece is equipped with many, the periphery of first cavity is fixed with the gasbag, many the bracing piece is all established in the gasbag.
Preferably, a pipeline between the alkaline washing tank and the reagent port is provided with an alkaline pump, and a third one-way valve is arranged between the reagent port and the alkaline pump.
Preferably, the oil collecting mechanism is circulated on top includes a top circulating pump and a heat exchanger, the inlet of top circulating pump with the discharge gate of fractionating tower is linked together, the liquid outlet of top circulating pump with the inlet of heat exchanger is linked together, the liquid outlet of heat exchanger with the fractionating tower is linked together, the heat exchanger with be equipped with first check valve between the fractionating tower, top circulating pump is last to be equipped with double-deck filter mantle and filter screen, and double-deck filter mantle divide into inner circle filter mantle and outer lane filter mantle, and the cover is worn to overlap on the inner circle filter mantle by the outer lane filter mantle, and offers the mesh in different apertures on inner circle filter mantle, outer lane filter mantle and the filter screen, and the distance between the mesh is different.
Preferably, the heat exchanger is a tubular heat exchanger, a front end tube plate of the heat exchanger is in sliding connection with the heat exchanger shell, and a second one-way valve is mounted on a pipeline between the heat exchanger and the oil-salt separation device.
Preferably, the top of the oil-water separator is provided with a motor, the output end of the motor is fixed with a rotating shaft, the rotating shaft is arranged in the oil-water separator, the surface of the rotating shaft is fixedly sleeved with a coarse-grained coalescence module, the inside of the coarse-grained coalescence module is fixed with a corrugated plate reinforced settlement module, and the end of the rotating shaft is fixed with a hydrophilic and hydrophobic fiber coalescence-separation module.
Preferably, a water phase pipeline of the oil-water separator is connected with a sewage treatment device, a fourth check valve is installed between the sewage treatment device and the water phase pipeline of the oil-water separator, a fifth check valve is installed on an oil phase pipeline of the oil-water separator, and a pipeline where the fifth check valve is located between the fractionating tower and the first check valve.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
when oil-water mixed liquid with over-high salt content flows into the oil-salt separation device, the stepping motor is started to drive the adjusting rod to rotate, so that the two connecting rods move upwards and downwards in the main shaft respectively, the stirring mechanism is inclined, the mixed liquid is convenient to stir, the motor is started to drive the driving gear to rotate, the driven gear rotates and drives the shaft sleeve to rotate, the clamping block is clamped on the main shaft to further drive the main shaft to rotate, so that the inclined stirring mechanism stirs the mixed liquid, meanwhile, the alkali liquor pump injects alkali liquor into the separation tank to accelerate water-soluble salt in the oil to be quickly dissolved into water, at the moment, under the action of buoyancy, the stirring mechanism can rise in the mixed liquid, when the mixed liquid rises to an oil-water boundary, the air pump is started to inflate the air bag through the hollow main shaft, so that the air bag is inflated, and the oil is separated from water containing salt ions, then through the liquid outlet, oil and water successively get into down-flow radial extractor and oil water separator and remove the salt, because can separate oil and salt-containing water in oil salt separator, wherein salt-containing water passes through oil water separator and directly discharges, make down-flow radial extractor and oil water separator in can be more the high-efficient carry out the desalination to remaining oil that the salt content is less, thereby realized the online desalination of the high efficiency to salt ion that disperses in the oil that the salt content is too high, the effectual desalination effect that improves reflux oil and circulating oil at the top of the tower of the fractionating tower, the emergence of the salt deposition phenomenon appears once more in the top of the tower of fractionating tower in the short time after having avoided the washing.
(2) The invention has simple operation flow and convenient use, and can effectively reduce the discharge of dirty oil and sewage generated by the operation of the washing tower by connecting the water tank pipeline of the oil-water separator with the sewage treatment device.
Drawings
FIG. 1 is a schematic structural diagram of an online desalting device of a fractionating tower top circulation system in the invention;
FIG. 2 is a schematic diagram of the oil-water flow direction of an online desalting device of a fractionating tower top circulation system in the invention;
FIG. 3 is a schematic structural diagram of an oil-salt separation device according to the present invention;
FIG. 4 is a schematic structural diagram illustrating the stirring mechanism of FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 3 according to the present invention;
FIG. 6 is a cross-sectional view of the adjustment mechanism and the agitation mechanism of FIG. 3 in accordance with the present invention;
FIG. 7 is a schematic top view of the bladder of FIG. 6 according to the present invention;
FIG. 8 is a schematic diagram of the oil-water separator of FIG. 1 according to the present invention.
The correspondence between the labels of the various figures in the drawing and the names of the components is as follows:
1. a fractionating column; 2. a top circulating oil collecting mechanism; 201. a top-tracking pump; 202. a heat exchanger; 203. a first check valve; 204. a second one-way valve; 3. an oil-salt separation device; 31. a separation tank; 32. a medicament port; 33. a liquid outlet; 34. a drive mechanism; 341. a motor; 342. a driving gear; 343. a driven gear; 344. a shaft sleeve; 345. a clamping block; 35. a main shaft; 36. a stirring mechanism; 361. a first cavity; 362. connecting piles; 363. a support bar; 364. an air bag; 365. a stirring rod; 37. an adjustment mechanism; 371. a second cavity; 372. a stepping motor; 373. an air pump; 374. an adjusting lever; 375. a connecting rod; 301. an alkaline washing tank; 302. an alkaline liquid pump; 303. a third check valve; 4. a forward flow radial extractor; 5. an oil-water separator; 501. a sewage treatment device; 502. a fourth check valve; 503. a fifth check valve; 504. a coarse-grained coalescence module; 505. a corrugated plate reinforced settlement module; 506. a hydrophilic-hydrophobic fiber coalescence-separation module; 507. an electric motor; 508. and rotating the shaft.
Detailed Description
The invention is further described below in connection with specific embodiments of the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, an online desalting device of a fractionating tower top circulation system in an embodiment of the present invention includes a fractionating tower 1, a top circulation oil collecting mechanism 2 is installed on the fractionating tower 1, the top circulation oil collecting mechanism 2 is connected to an oil-salt separating device 3, the oil-salt separating device 3 is connected to a downstream radial extractor 4, the downstream radial extractor 4 is connected to an oil-water separator 5, and the oil-water separator 5 is communicated with the top circulation oil collecting mechanism 2, according to the present invention, an oil-water mixed liquid flowing out from the fractionating tower 1 is subjected to oil-water separation by the oil-salt separating device 3, and the separated oil-water flows into the downstream radial extractor 4 and the oil-water separator 5 in sequence, such that desalting efficiency of the downstream radial extractor 4 and the oil-water separator 5 can be effectively improved, and meanwhile, the device injects an alkali liquor into the oil-salt separating device 3 by an alkali liquor pump 302 to accelerate salt ions in the oil to be fused into water, the on-line desalting device can effectively remove the salt impurities in the top return oil and the circulating oil of the fractionating tower 1, reduce the mass fraction of chloride ions in the oil to below 1 mu g/g, simultaneously keep stable operation for a long period, stably control the corrosion rate at the top of the fractionating tower 1 within 0.2mm/a and stably control the pressure drop to about 25 kilopascals.
The top circulation oil collecting mechanism 2 comprises a top circulation pump 201 and a heat exchanger 202, wherein a liquid inlet of the top circulation pump 201 is communicated with a discharge hole of the fractionating tower 1, a liquid outlet of the top circulation pump 201 is communicated with a liquid inlet of the heat exchanger 202, a liquid outlet of the heat exchanger 202 is communicated with the fractionating tower 1, and a first one-way valve 203 is arranged between the heat exchanger 202 and the fractionating tower 1.
The top circulation pump 201 is provided with a double-layer filter cover and a filter screen, the double-layer filter cover is divided into an inner ring filter cover and an outer ring filter cover, the outer ring filter cover is sleeved on the inner ring filter cover in a penetrating way, meshes with different apertures are arranged on the inner ring filter cover, the outer ring filter cover and the filter screen, and the distances among the meshes are different, the oil after coking firstly enters the inner ring filter cover through the outer ring filter cover and then enters the top circulation pump 201 through the filter screen by the arrangement of the top circulation pump 201, the impact speeds of salt blocks and coke powder blocks in the coking process are reduced, the salt blocks and the coke powder blocks are blocked in a multilayer way, the salt blocks and the coke powder are separated to be settled, the top circulation pump 201 cannot be blocked, the filter cover and the filter screen only need to be cleaned regularly in industrial production, and the cost is reduced, the production efficiency is improved.
The heat exchanger 202 adopts a tubular heat exchanger, the front end tube plate of the heat exchanger 202 is in sliding connection with the shell of the heat exchanger 202, the second one-way valve 204 is arranged on a pipeline between the heat exchanger 202 and the oil-salt separation device 3, the front end tube plate and the shell are connected in a piston sliding mode through the tubular heat exchanger 202, and the heat exchanger comprises a plurality of sub tube plates which are spliced together, so that the stress is well dispersed and eliminated, and the heat exchanger is stable in work and reliable in operation.
The driving mechanism 34 includes a motor 341, a driving gear 342 is fixed at an output end of the motor 341, a sleeve 344 is sleeved on the surface of the main shaft 35, a driven gear 343 is fixed on the periphery of the sleeve 344, the driving gear 342 is engaged with the driven gear 343, a block 345 is arranged inside the sleeve 344, the block 345 is locked with the sliding groove on the surface of the main shaft 35, the bottom of the shaft sleeve 344 is rotatably connected with the top of the separating tank 31 through a bearing arranged on the top of the separating tank 31, the main shaft 35 is hollow, the adjusting mechanism 37 comprises a second cavity 371, a stepping motor 372 and an air pump 373 are assembled in the second cavity 371, an adjusting rod 374 is fixed at the output end of the stepping motor 372, two ends of the adjusting rod 374 are respectively connected with a connecting rod 375 in a sliding way, and the two connecting rods 375 are arranged in the main shaft 35, and the output end of the air pump 373 is communicated with the main shaft 35.
An alkaline pump 302 is arranged on a pipeline between the alkaline tank 301 and the medicament opening 32, and a third one-way valve 303 is arranged between the medicament opening 32 and the alkaline pump 302.
When the oil-water mixture flows into the oil-water separation device 3, the stepping motor 372 is started to drive the adjusting rod 374 to rotate, so that the two connecting rods 375 move upwards and downwards in the main shaft 35 respectively, the stirring mechanism 36 tilts, the mixture is convenient to stir, at the moment, the motor 341 is started to drive the driving gear 342 to rotate, the driven gear 343 rotates, the shaft sleeve 344 is driven to rotate, the clamping block 345 is clamped on the main shaft 35 to drive the main shaft 35 to rotate, so that the tilted stirring mechanism 36 stirs the mixture, meanwhile, the alkali liquid pump 302 injects alkali liquid into the separation tank 31 to accelerate the rapid dissolution of water-soluble salt in oil into water, at the moment, under the action of buoyancy, the stirring mechanism 36 rises in the mixture, when the mixture rises to an oil-water boundary, the calculation of the buoyancy and the stirring mechanism 36 can rise to the oil-water boundary are the prior art, without much description, the air pump 373 is started, the air bag 364 is inflated through the hollow main shaft 35, the air bag 364 is expanded, oil and water containing salt ions are separated, and then the oil and the water sequentially enter the downstream radial extractor 4 and the oil-water separator 5 through the liquid outlet 33 for desalting.
When the device is in production operation, the oil separated by the fractionating tower 1 enters the oil-salt separation device 3, and is fully mixed with the alkali liquor conveyed by the alkali liquor pump 302 in the oil-salt separation device 3, sulfur or mercaptan contained in the oil and the alkali liquor are subjected to acid-base neutralization reaction, so that the sulfur or mercaptan is removed, the reacted mixture is in a separation tank 31, because the density of the oil is low and the density of the alkali liquor is high, the liquid in the separation tank 31 is layered, the lower layer is an alkali liquor layer, the upper layer is an oil layer, the whole separation tank 31 is in a full liquid level state, the alkali liquor layer at the lower layer is continuously jacked into the forward flow radial extractor 4 along with the continuous neutralization reaction in the separation tank 31, then flows out from a water phase pipeline of the oil-water separator 5, and when the alkali liquor layer flows completely, an oil layer flows into the downstream radial extractor 4 and the oil-water separator 5 in turn, therefore, the concurrent flow radial extractor 4 and the oil-water separator 5 can carry out desalting treatment on the oil layer more efficiently.
The forward flow radial extractor 4 extracts and separates salt ions entering the oil water, so that the oil salt ions are fused with the water.
The top of the oil-water separator 5 is provided with a motor 507, the output end of the motor 507 is fixed with a rotating shaft 508, the rotating shaft 508 is arranged inside the oil-water separator 5, the surface of the rotating shaft 508 is fixedly sleeved with a coarse-grained coalescence module 504, the inside of the coarse-grained coalescence module 504 is fixed with a corrugated plate reinforced settlement module 505, the end of the rotating shaft 508 is fixed with an hydrophilic-hydrophobic fiber coalescence-separation module 506, it should be noted that the surfaces of the coarse-grained coalescence module 504 and the hydrophilic-hydrophobic fiber coalescence-separation module 506 are both contacted with the inner wall of the oil-water separator 5, so as to prevent oil water entering the oil-water separator 5 from an oil phase pipeline from directly flowing out through a gap between the coarse-grained coalescence module 504 and the oil-water separator 5 and flowing out from a gap between the hydrophilic-hydrophobic fiber coalescence-separation module 506 and the oil-water separator 5, and drive the rotating shaft 508 to rotate by starting the motor 507, and then the coarse-grained coalescence module 504, the corrugated plate strengthened sedimentation module 505 and the hydrophilic and hydrophobic fiber coalescence-separation module 506 rotate at a high speed, so that the contact between water drops and part of unextracted salt ions is further increased, salt ions and the water drops are fully fused, secondary deep extraction fusion of the salt ions dispersed in the oil is realized, and oil-water separation is quickly and efficiently realized under the filtering of the coarse-grained coalescence module 504, the corrugated plate strengthened sedimentation module 505 and the hydrophilic and hydrophobic fiber coalescence-separation module 506.
The water phase pipeline of the oil-water separator 5 is connected with a sewage treatment device 501, a fourth check valve 502 is arranged between the sewage treatment device 501 and the water phase pipeline of the oil-water separator 5, a fifth check valve 503 is arranged on the oil phase pipeline of the oil-water separator 5, the pipeline where the fifth check valve 503 is arranged is positioned between the fractionating tower 1 and the first check valve 203, the top of the fractionating tower 1 is additionally provided with an oil-salt separation device 3, a deep oil-water separator 5 and a downstream radial extractor 4 to remove the salt content in the return oil of the fractionating tower 1 or the circulating oil at the top of the fractionating tower 1, according to the operating environment of the device, the return oil at the top of the fractionating tower is selected to be separated out by 110t/h (100 percent extraction) from a front regulating valve of the returning tower or the circulating oil is separated out by 110t/h (17 percent extraction) from the front regulating valve of the returning tower to enter a desalting device to be mixed with a purified water device in the desalting device, the online desalting device can meet the desalting requirements of top reflux and top circulation, effectively relieves the operation fluctuation caused by accumulation of normal top ammonium salt, and ensures the safe and stable operation of the device in the subsequent production period.
The working principle of the invention is as follows: firstly, oil in a fractionating tower 1 enters a top circulating pump 201 through a discharge hole, then enters an oil-salt separation device 3 to perform heat exchange operation with a medium in a heat exchanger 202 through the top circulating pump 201, then enters an oil-salt separation device 3, a stepping motor 372 is started to drive an adjusting rod 374 to rotate, so that two connecting rods 375 move upwards and downwards in a main shaft 35 respectively, so that a stirring mechanism 36 is inclined, the mixed liquid is convenient to stir, at the moment, a motor 341 is started to drive a driving gear 342 to rotate, a driven gear 343 is rotated to drive a shaft sleeve 344 to rotate, as a clamping block 345 is clamped on the main shaft 35, the main shaft 35 is further driven to rotate, so that the inclined stirring mechanism 36 stirs the mixed liquid, meanwhile, an alkali liquor pump 302 injects alkali liquor into a separation tank 31 to accelerate water-soluble salts in the oil to be rapidly dissolved into water, at the moment, under the action of buoyancy, the stirring mechanism 36 rises in the mixed liquid, when the oil-water boundary rises, the air pump 373 is started, the air bag 364 is inflated through the hollow main shaft 35, the air bag 364 is expanded, oil and water containing salt ions are separated, then the oil and the water sequentially enter the downstream radial extractor 4 and the oil-water separator 5 through the liquid outlet 33 for desalting, the oil and the water are separated from the salt-containing water in the oil-salt separation device 3, and the salt-containing water is directly discharged through the oil-water separator 5, so that the downstream radial extractor 4 and the oil-water separator 5 can more efficiently desalt the oil with less salt content, the efficient extraction and separation of the salt ions in the oil with the excessive salt content are realized, and the desalting efficiency of the reflux oil at the top of the fractionating tower and the circulating oil is effectively improved.
While the invention has been described in detail with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides an online demineralizer of fractionating tower top circulation system, includes fractionating tower (1), its characterized in that: the top circulating oil collecting mechanism (2) is assembled on the fractionating tower (1), the top circulating oil collecting mechanism (2) is connected with an oil-salt separating device (3), the oil-salt separating device (3) comprises a separating tank (31), a main shaft (35) penetrates through the center of the top of the separating tank (31), an adjusting mechanism (37) is assembled at the top of the main shaft (35), a stirring mechanism (36) is arranged at the bottom of the main shaft (35), the stirring mechanism (36) is arranged inside the separating tank (31), a medicament port (32) and a driving mechanism (34) are further arranged at the top of the separating tank (31), an alkaline washing tank (301) is connected at the top of the medicament port (32), the output end of the driving mechanism (34) is rotatably connected with the main shaft (35), a liquid outlet (33) is arranged at the bottom of the separating tank (31), and the liquid outlet (33) is connected with a forward-flow radial extractor (4), the forward flow radial extractor (4) is connected with an oil-water separator (5), and the oil-water separator (5) is communicated with the top circulating oil collecting mechanism (2); the main shaft (35) is arranged in a hollow mode, the adjusting mechanism (37) comprises a second cavity (371), a stepping motor (372) and an air pump (373) are assembled in the second cavity (371), an adjusting rod (374) is fixed at the output end of the stepping motor (372), two ends of the adjusting rod (374) are respectively connected with a connecting rod (375) in a sliding mode, the two connecting rods (375) are arranged in the main shaft (35), and the output end of the air pump (373) is communicated with the main shaft (35); the stirring mechanism (36) comprises a first cavity (361), connecting piles (362) are fixed on the left side and the right side of the first cavity (361), a stirring rod (365) is movably connected to the connecting piles (362) through a rotating shaft, one end of the stirring rod (365) penetrates through the first cavity (361) and is movably connected with the bottom of a connecting rod (375), a supporting rod (363) is fixed to the other end of the stirring rod (365), a plurality of supporting rods (363) are arranged, an air bag (364) is fixed to the periphery of the first cavity (361), and the plurality of supporting rods (363) are arranged in the air bag (364); when oil-water mixed liquid flows into the oil-salt separation device (3), the stepping motor (372) is started to drive the adjusting rod (374) to rotate, so that the two connecting rods (375) move upwards and downwards in the main shaft (35) respectively, the stirring mechanism (36) inclines to stir the mixed liquid conveniently, the motor (341) is started to drive the driving gear (342) to rotate, the driven gear (343) is driven to rotate, the shaft sleeve (344) is driven to rotate, the clamping block (345) is clamped on the main shaft (35) to further drive the main shaft (35) to rotate, so that the inclined stirring mechanism (36) stirs the mixed liquid, the alkali liquid pump (302) injects alkali liquid into the separation tank (31) to accelerate water-soluble salts in the oil to be dissolved into the water quickly, at the moment, under the action of buoyancy, the stirring mechanism (36) can rise in the mixed liquid, and when the oil-water boundary is risen, the air pump (373) is started, the air bag (364) is inflated through the hollow main shaft (35), so that the air bag (364) is expanded, oil and water containing salt ions are separated, and then the oil and the water sequentially enter the concurrent flow radial extractor (4) and the oil-water separator (5) for desalting through the liquid outlet (33).
2. The online desalting device of a fractionating tower top circulating system according to claim 1, wherein: actuating mechanism (34) includes motor (341), the output of motor (341) is fixed with driving gear (342), the surface cover of main shaft (35) is equipped with axle sleeve (344), the periphery of axle sleeve (344) is fixed with driven gear (343), driving gear (342) and driven gear (343) meshing are connected, axle sleeve (344) inside is equipped with fixture block (345), fixture block (345) and the spout joint of establishing on main shaft (35) surface, the bottom of axle sleeve (344) is connected through the bearing rotation of establishing at knockout drum (31) top with the top of knockout drum (31).
3. The online desalting device of a fractionating tower top circulation system according to claim 1, wherein: an alkaline pump (302) is installed on a pipeline between the alkaline tank (301) and the medicament port (32), and a third one-way valve (303) is installed between the medicament port (32) and the alkaline pump (302).
4. The online desalting device of a fractionating tower top circulation system according to claim 1, wherein: the top circulation oil collecting mechanism (2) comprises a top circulation pump (201) and a heat exchanger (202), wherein a liquid inlet of the top circulation pump (201) is communicated with a discharge hole of the fractionating tower (1), a liquid outlet of the top circulation pump (201) is communicated with a liquid inlet of the heat exchanger (202), a liquid outlet of the heat exchanger (202) is communicated with the fractionating tower (1), the heat exchanger (202) is provided with a first one-way valve (203) between the fractionating tower (1), the top circulation pump (201) is provided with a double-layer filter cover and a filter screen, the double-layer filter cover is divided into an inner ring filter cover and an outer ring filter cover, the outer ring filter cover is sleeved on the inner ring filter cover, meshes with different apertures are formed in the inner ring filter cover, the outer ring filter cover and the filter screen, and distances between the meshes are different.
5. The online desalting device of a fractionating tower top circulation system according to claim 4, wherein: the heat exchanger (202) is a tubular heat exchanger, a front end tube plate of the heat exchanger (202) is in sliding connection with a shell of the heat exchanger (202), and a second one-way valve (204) is installed on a pipeline between the heat exchanger (202) and the oil-salt separation device (3).
6. The online desalting device of a fractionating tower top circulation system according to claim 1, wherein: motor (507) is installed at the top of oil water separator (5), the output of motor (507) is fixed with axis of rotation (508), inside oil water separator (5) was established in axis of rotation (508), the fixed surface of axis of rotation (508) has cup jointed coarse graining coalescence module (504), coarse graining coalescence module (504)'s inside is fixed with the buckled plate and has strengthened subsiding module (505), the end fixing of axis of rotation (508) has hydrophilic and hydrophobic fibre coalescence separation module (506).
7. The online desalting device of a fractionating tower top circulation system according to claim 4, wherein: the water phase pipeline of the oil-water separator (5) is connected with a sewage treatment device (501), a fourth check valve (502) is installed between the sewage treatment device (501) and the water phase pipeline of the oil-water separator (5), a fifth check valve (503) is installed on the oil phase pipeline of the oil-water separator (5), and a pipeline where the fifth check valve (503) is located between the fractionating tower (1) and the first check valve (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184122.5A CN114259749B (en) | 2022-02-28 | 2022-02-28 | Online desalination device of fractionating tower top circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184122.5A CN114259749B (en) | 2022-02-28 | 2022-02-28 | Online desalination device of fractionating tower top circulation system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194258A (en) * | 2013-04-19 | 2013-07-10 | 华东理工大学 | Method for prolonging operation period of circulation oil system on top of fractionation tower |
| CN204151295U (en) * | 2014-08-28 | 2015-02-11 | 北京欧谊德科技有限公司 | A kind of anti-salt crust device of liquid-liquid extraction |
| CN105502740A (en) * | 2015-12-17 | 2016-04-20 | 科迈化工股份有限公司 | Method for recycling materials in rubber antioxidant TMQ production wastewater |
| WO2018224738A1 (en) * | 2017-06-07 | 2018-12-13 | La Harpe D'or | Distillation process particularly suitable for crude oils that are difficult to desalt and for opportunity crude oils, and associated devices and column |
| CN208249945U (en) * | 2018-04-26 | 2018-12-18 | 重庆青年职业技术学院 | A kind of oily-water seperating equipment of automatic control |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4571299A (en) * | 1983-07-21 | 1986-02-18 | Colgate-Palmolive Company | Continuous extraction apparatus |
| MY164238A (en) * | 2012-07-27 | 2017-11-30 | Petroliam Nasional Berhad (Petronas) | A process of desalting crude oil |
| CN110215741A (en) * | 2019-06-12 | 2019-09-10 | 中国科学院过程工程研究所 | A kind of oil water separator and separation system |
| CN214863105U (en) * | 2021-01-07 | 2021-11-26 | 山东味正品康食品科技股份有限公司 | Mixing arrangement is used in pickling material production extraction |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194258A (en) * | 2013-04-19 | 2013-07-10 | 华东理工大学 | Method for prolonging operation period of circulation oil system on top of fractionation tower |
| CN204151295U (en) * | 2014-08-28 | 2015-02-11 | 北京欧谊德科技有限公司 | A kind of anti-salt crust device of liquid-liquid extraction |
| CN105502740A (en) * | 2015-12-17 | 2016-04-20 | 科迈化工股份有限公司 | Method for recycling materials in rubber antioxidant TMQ production wastewater |
| WO2018224738A1 (en) * | 2017-06-07 | 2018-12-13 | La Harpe D'or | Distillation process particularly suitable for crude oils that are difficult to desalt and for opportunity crude oils, and associated devices and column |
| CN208249945U (en) * | 2018-04-26 | 2018-12-18 | 重庆青年职业技术学院 | A kind of oily-water seperating equipment of automatic control |
Non-Patent Citations (1)
| Title |
|---|
| 催化分馏塔在线水洗除盐技术应用总结;杨开研等;《炼油技术与工程》;20210815;第51卷(第8期);第48-52页 * |
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